13700643 has 8 divisors (see below), whose sum is σ = 19928256. Its totient is φ = 8303400.

The previous prime is 13700611. The next prime is 13700651. The reversal of 13700643 is 34600731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13700643 - 2⁵ = 13700611 is a prime.

It is a super-2 number, since 2×13700643² = 375415237226898, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13700243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207553 + ... + 207618.

It is an arithmetic number, because the mean of its divisors is an integer number (2491032).

Almost surely, 2^13700643 is an apocalyptic number.

13700643 is a deficient number, since it is larger than the sum of its proper divisors (6227613).

13700643 is a wasteful number, since it uses less digits than its factorization.

13700643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415185.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 13700643 is about 3701.4379638189. The cubic root of 13700643 is about 239.2839944970.

The spelling of 13700643 in words is "thirteen million, seven hundred thousand, six hundred forty-three".